JP2006126773A - Multi-domain vertical alignment liquid crystal display - Google Patents

Multi-domain vertical alignment liquid crystal display Download PDF

Info

Publication number
JP2006126773A
JP2006126773A JP2005122520A JP2005122520A JP2006126773A JP 2006126773 A JP2006126773 A JP 2006126773A JP 2005122520 A JP2005122520 A JP 2005122520A JP 2005122520 A JP2005122520 A JP 2005122520A JP 2006126773 A JP2006126773 A JP 2006126773A
Authority
JP
Japan
Prior art keywords
liquid crystal
substrate
crystal display
polarizing plate
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005122520A
Other languages
Japanese (ja)
Inventor
Lee Seok-Lyul
錫烈 李
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quanta Display Inc
Original Assignee
Quanta Display Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quanta Display Inc filed Critical Quanta Display Inc
Publication of JP2006126773A publication Critical patent/JP2006126773A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-domain vertical alignment liquid crystal display of which the image quality is improved by reducing light-leakage generated in the vicinity of protrusions in pixel electrodes. <P>SOLUTION: The liquid crystal display device comprises a first polarizing plate, a second polarizing plate, a first substrate having a plurality of protrusions, a second substrate having a plurality of pixel electrodes, and a liquid crystal layer filled between the first substrate and the second substrate. Among them, the polarization axis of the second substrate and that of the first substrate intersect each other. Furthermore, the protrusions form an angle in the range of 0 degrees and 10 degrees or 80 degrees and 90 degrees, with respect to the polarization axis of the first substrate and the polarization axis of the second substrate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は一種の液晶ディスプレイ装置に係り、特に一種のマルチドメイン垂直配向（Ｍｕｌｔｉ−Ｄｏｍａｉｎ Ｖｅｒｔｉｃａｌ Ａｌｉｇｎｍｅｎｔ）液晶ディスプレイ装置に関する。   The present invention relates to a kind of liquid crystal display device, and more particularly to a kind of multi-domain vertical alignment liquid crystal display device.

周知の液晶ディスプレイ装置（図９参照）の多くは、画像表示のコントラストを向上するため、液晶分子７を挟む上基板１０、下基板２０の外側に偏光板１、２が設置されている。これらの偏光板の配置は、通常上下の偏光板の分極軸１１、２１が相互に垂直となるようにされて、液晶分子７に屈折された後の分極光のみを透過させて射出し、これにより画像表示のコントラストを向上し、画像表示の品質を改善している。   In many of known liquid crystal display devices (see FIG. 9), polarizing plates 1 and 2 are installed outside the upper substrate 10 and the lower substrate 20 with the liquid crystal molecules 7 interposed therebetween in order to improve the contrast of image display. The arrangement of these polarizing plates is usually such that the polarization axes 11 and 21 of the upper and lower polarizing plates are perpendicular to each other, and only the polarized light after being refracted by the liquid crystal molecules 7 is transmitted and emitted. This improves the contrast of image display and improves the quality of image display.

この周知の構造がマルチドメイン垂直配向液晶ディスプレイ装置に応用される時、図１（側面図）及び図２（平面図）に示されるように、マルチドメイン垂直配向液晶ディスプレイ装置の上基板内の突起物３（ｐｒｏｔｒｕｓｉｏｎ）と液晶分子７間の相互作用により、液晶ディスプレイ装置に漏光の現象が発生し、即ち光線が上基板１０の突起物３辺縁に沿って僅かに漏光し、画像の表示品質が低下し、コントラストも低下する。このような現象の発生は、突起物３付近の液晶分子７が、幾何空間の押圧ねじれにより、液晶分子長軸７１が突起物３に向けて傾斜する状況を現出することによる。このような指向情況は、液晶分子長軸７１が上基板１０側の偏光板１の透光軸（ｔｒａｎｓｍｉｓｓｉｏｎ ａｘｉｘ）方向３１を指向し、即ち液晶分子長軸７１の指向と上基板１０側の偏光板の分極軸１１が４５度角を形成する時、未通電情況下において（即ち暗光情況）、制御不能な漏光を有しうる。通電時、このような液晶分子長軸７１が引き起こす漏光は画像コントラストの低下をもたらし、即ち表示品質が低下する。画像表示の品質或いはコントラストを改善するためにはこの突起物と液晶分子長軸指向による漏光を抑制しなければならない。   When this known structure is applied to a multi-domain vertical alignment liquid crystal display device, as shown in FIG. 1 (side view) and FIG. 2 (plan view), a protrusion in the upper substrate of the multi-domain vertical alignment liquid crystal display device. Due to the interaction between the object 3 (protrusion) and the liquid crystal molecules 7, a light leakage phenomenon occurs in the liquid crystal display device, that is, the light beam slightly leaks along the edge of the protrusion 3 on the upper substrate 10, and the image display quality And the contrast also decreases. Such a phenomenon occurs because the liquid crystal molecules 7 in the vicinity of the protrusion 3 appear to have a state in which the liquid crystal molecule major axis 71 is inclined toward the protrusion 3 due to the pressure twist of the geometric space. In such a directivity situation, the liquid crystal molecule long axis 71 is directed in the transmission axis direction 31 of the polarizing plate 1 on the upper substrate 10 side, that is, the liquid crystal molecule long axis 71 and the polarization on the upper substrate 10 side. When the polarization axis 11 of the plate forms a 45 degree angle, it can have uncontrollable light leakage in an unenergized situation (ie a dark light situation). Such light leakage caused by the liquid crystal molecule long axis 71 when energized causes a decrease in image contrast, that is, a display quality is deteriorated. In order to improve the quality or contrast of image display, light leakage due to the projections and liquid crystal molecule long axis orientation must be suppressed.

本発明は画素電極中の突起物付近の漏光を減らし、液晶ディスプレイ装置の画像品質を改善した一種のマルチドメイン垂直配向液晶ディスプレイ装置を提供することを目的としている。   An object of the present invention is to provide a kind of multi-domain vertical alignment liquid crystal display device in which the light leakage near the protrusions in the pixel electrode is reduced and the image quality of the liquid crystal display device is improved.

請求項１の発明は、マルチドメイン垂直配向液晶ディスプレイ装置において、
第１偏光板と、
第２偏光板であって、該第２偏光板の分極軸が該第１偏光板の分極軸と交叉する、上記第２偏光板と、
複数の突起物を具えた第１基板であって、該第１偏光板と該第２偏光板の間に位置し、該突起物が該第１基板の一つの表面に位置し、且つ該突起物と該第１偏光板或いは第２偏光板の分極軸との夾角が０°から１０°或いは８０°から９０°の間である、上記第１基板と、
複数の画素電極を具えた第２基板であって、該第１偏光板と該第２偏光板の間に位置し、且つ該画素電極が該第２基板の一つの表面に位置する、上記第２基板と、
該第１基板と該第２基板の間に位置する液晶層と、
を具え、該突起物が該第１基板と該第２基板の間に位置することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項２の発明は、請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、画素電極表面に複数のスリットが設けられ、該スリットが画素電極の辺縁に位置し、該スリットの延伸方向が突起物の第２基板における投影と相互に交錯することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項３の発明は、請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、スリットの延伸方向と突起物の投影の交叉の角度範囲が３０°から５０°の間であることを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項４の発明は、請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、少なくとも二つのスリットの長さが異なるか或いは少なくとも二つのスリット間距が異なることを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項５の発明は、請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、スリットの長さが画素電極の同一辺縁の両端より中間に向けて漸減或いは漸増することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項６の発明は、請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、スリット間の幅が画素電極の同一辺縁の両端より中間に向けて漸減或いは漸増することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項７の発明は、請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、第１基板と第２基板がガラス基板とされたことを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項８の発明は、請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、突起物が鋸歯状とされたことを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項９の発明は、請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、第２偏光板の分極軸と第１偏光板の分極軸が垂直であることを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。
請求項１０の発明は、請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、液晶分子がネガ型誘電異方性液晶とされたことを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置としている。 The invention of claim 1 is a multi-domain vertical alignment liquid crystal display device,
A first polarizing plate;
A second polarizing plate, wherein the polarization axis of the second polarizing plate intersects with the polarization axis of the first polarizing plate;
A first substrate having a plurality of protrusions, the first substrate being positioned between the first polarizing plate and the second polarizing plate, wherein the protrusions are positioned on one surface of the first substrate; and The first substrate having a depression angle with the polarization axis of the first polarizing plate or the second polarizing plate of 0 ° to 10 ° or 80 ° to 90 °;
A second substrate comprising a plurality of pixel electrodes, wherein the second substrate is located between the first polarizing plate and the second polarizing plate, and the pixel electrode is located on one surface of the second substrate. When,
A liquid crystal layer positioned between the first substrate and the second substrate;
And the protrusion is located between the first substrate and the second substrate. A multi-domain vertical alignment liquid crystal display device is provided.
According to a second aspect of the present invention, in the multi-domain vertical alignment liquid crystal display device according to the first aspect, a plurality of slits are provided on the surface of the pixel electrode, the slits are positioned at the edge of the pixel electrode, The multi-domain vertical alignment liquid crystal display device is characterized in that it intersects with projections on the second substrate.
According to a third aspect of the present invention, in the multi-domain vertical alignment liquid crystal display device according to the second aspect, the angle range of the crossing direction of the slit extension direction and the projection projection is between 30 ° and 50 °. A multi-domain vertical alignment liquid crystal display device.
The invention of claim 4 is the multi-domain vertical alignment liquid crystal display device according to claim 2, wherein the length of at least two slits is different or the distance between at least two slits is different. It is a display device.
According to a fifth aspect of the present invention, in the multi-domain vertical alignment liquid crystal display device according to the second aspect, the length of the slit gradually decreases or gradually increases from both ends of the same edge of the pixel electrode toward the middle. Domain vertical alignment liquid crystal display device.
According to a sixth aspect of the present invention, in the multi-domain vertical alignment liquid crystal display device according to the second aspect, the width between the slits gradually decreases or gradually increases from both ends of the same edge of the pixel electrode toward the middle. Domain vertical alignment liquid crystal display device.
The invention of claim 7 is the multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the first substrate and the second substrate are glass substrates.
An eighth aspect of the present invention is the multi-domain vertical alignment liquid crystal display device according to the first aspect, characterized in that the protrusions have a sawtooth shape.
The invention according to claim 9 is the multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the polarization axis of the second polarizing plate and the polarization axis of the first polarizing plate are perpendicular to each other. It is a liquid crystal display device.
The invention of claim 10 is the multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the liquid crystal molecules are negative dielectric anisotropic liquid crystals.

本発明のマルチドメイン垂直配向液晶ディスプレイ装置は、偏光板の分極軸の方向と突起物の角度配置により、液晶分子の漏光の引き起こす輝度不均一が改善される。更に、スリットの配置分布により突起物の両側の、均一の液晶分子傾斜角により形成される全体平均屈折率の違いが改善される。ゆえに本発明のマルチドメイン垂直配向液晶ディスプレイ装置の漏光情況及び輝度分布が改善され、画像表示のコントラストが高められ、画像品質が改善される。   In the multi-domain vertical alignment liquid crystal display device of the present invention, nonuniform brightness caused by light leakage of liquid crystal molecules is improved by the polarization axis direction of the polarizing plate and the angular arrangement of the protrusions. Furthermore, the difference in the overall average refractive index formed by the uniform liquid crystal molecule tilt angle on both sides of the protrusion is improved by the arrangement distribution of the slits. Therefore, the light leakage situation and the luminance distribution of the multi-domain vertical alignment liquid crystal display device of the present invention are improved, the contrast of the image display is increased, and the image quality is improved.

本発明のマルチドメイン垂直配向液晶ディスプレイ装置は、第１偏光板、第２偏光板、複数の突起物を具えた第１基板、複数の画素電極を具えた第２基板、及び第１基板と第２基板の間に位置する液晶層を包含する。そのうち第２偏光板と第１偏光板の分極軸は相互に交叉し、該突起物は第１基板の表面に位置し、且つ該突起物と第１偏光板と第２偏光板の分極軸の夾角は０°から１０°或いは８０°から９０°の間とされる。更に、第２基板は第１偏光板と第２偏光板の間に位置し、画素電極は第２基板の表面に位置し、且つ液晶層は第１基板と第２基板の間に位置する。第１基板の突起物は並びに第１基板と第２基板の間に位置する。   The multi-domain vertical alignment liquid crystal display device of the present invention includes a first polarizing plate, a second polarizing plate, a first substrate having a plurality of protrusions, a second substrate having a plurality of pixel electrodes, and a first substrate and a first substrate. A liquid crystal layer located between the two substrates is included. Among them, the polarization axes of the second polarizing plate and the first polarizing plate cross each other, the protrusion is located on the surface of the first substrate, and the polarization axes of the protrusion, the first polarizing plate, and the second polarizing plate The depression angle is between 0 ° and 10 ° or between 80 ° and 90 °. Further, the second substrate is located between the first polarizing plate and the second polarizing plate, the pixel electrode is located on the surface of the second substrate, and the liquid crystal layer is located between the first substrate and the second substrate. The protrusions of the first substrate are located between the first substrate and the second substrate.

本発明の液晶ディスプレイ装置の画素電極表面は選択的に複数のスリットを包含するものとされ、これにより隣り合う画素電極の輝度の均一性が改善される。   The surface of the pixel electrode of the liquid crystal display device according to the present invention selectively includes a plurality of slits, thereby improving the uniformity of the luminance of adjacent pixel electrodes.

そのうちこれらのスリットは画素電極の辺縁に位置し、且つスリットの延伸方向と該突起物の第２基板における投影が交錯する。これらのスリットの延伸方向と該突起物の投影の交叉の角度は周知の任意の角度とされるが、スリットの延伸方向と該突起物の投影の交叉角度範囲は８０°から１１０°の間とされるのがよい。これらのスリットの長さ分布は任意の分布とされるが、好ましくは少なくとも二つの第２スリットの長さが異なるものとされる。更に好ましくはスリットの長さが画素電極の同一辺縁両端より中間に向けて漸減或いは漸増するものとされる。これらのスリット間の間距分布は任意の分布とされるが、好ましくはスリット間距は少なくとも二つの間距が異なるものとされる。更に好ましくはスリット間の幅が画素電極の同一辺縁両端より中間に向けて漸減或いは漸増するものとされる。本発明の第２偏光板の分極軸と第１偏光板の分極軸の交叉の角度は任意の角度とされるが、好ましくは第２偏光板の分極軸と第１偏光板の分極軸が垂直とされる。本発明の突起物と第１偏光板と第２偏光板の分極軸の夾角は、０°〜１０°或いは８０°〜９０°の間の任意の角度とされ、好ましくは垂直或いは平行とされる。本発明の第１基板と第２基板は任意の透明基板とされるが、好ましくはガラス基板とされる。本発明の画素電極は任意の透明電極とされるが、好ましくはＩＴＯ或いはＩＺＯとされる。本発明の突起物の第１基板上の分布形状は任意の形状とされるが、好ましくは鋸歯状とされる。本発明に適用される液晶は任意の液晶とされ、液晶分子は好ましくはネガ型誘電異方性液晶とされる。   Among them, these slits are located at the edge of the pixel electrode, and the extension direction of the slits and the projection of the protrusions on the second substrate intersect. The crossing angle of the slit extending direction and the projection of the projection is an arbitrary known angle, but the crossing angle range of the slit extending direction and the projection of the protrusion is between 80 ° and 110 °. It is good to be done. The length distribution of these slits is an arbitrary distribution, but preferably the lengths of at least two second slits are different. More preferably, the length of the slit gradually decreases or gradually increases from both ends of the same edge of the pixel electrode toward the middle. The distance distribution between the slits is an arbitrary distribution. Preferably, the distance between the slits is different between at least two distances. More preferably, the width between the slits gradually decreases or gradually increases from both ends of the same edge of the pixel electrode toward the middle. The crossing angle of the polarization axis of the second polarizing plate of the present invention and the polarization axis of the first polarizing plate is an arbitrary angle, but the polarization axis of the second polarizing plate and the polarization axis of the first polarizing plate are preferably perpendicular. It is said. The depression angle of the polarization axis of the projection of the present invention, the first polarizing plate and the second polarizing plate is an arbitrary angle between 0 ° to 10 ° or 80 ° to 90 °, preferably vertical or parallel. . The first substrate and the second substrate of the present invention are arbitrary transparent substrates, but are preferably glass substrates. The pixel electrode of the present invention is an arbitrary transparent electrode, but is preferably ITO or IZO. The distribution shape of the projections of the present invention on the first substrate is an arbitrary shape, but is preferably a sawtooth shape. The liquid crystal applied to the present invention is any liquid crystal, and the liquid crystal molecules are preferably negative dielectric anisotropic liquid crystals.

図３は本発明のマルチドメイン垂直配向液晶ディスプレイ装置の好ましい実施例の側面図である。図４は本実施例の平面図である。図示されるように、本実施例のマルチドメイン垂直配向液晶ディスプレイ装置は上偏光板１、下偏光板２、上基板１０（第１基板）、下基板２０（第２基板）を包含する。本実施例の上基板１０と下基板２０の間に液晶層（液晶分子７）が挟まれている。この液晶層（液晶分子７）は並びに上基板１０と下基板２０の間に封入されている。本発明の上偏光板１と下偏光板２は必要に応じて上基板１０と下基板２０の液晶層（液晶分子７）に対向する表面に配置されるか液晶層（液晶分子７）と反対の基板表面に配置される。本実施例中、上偏光板１と下偏光板２はそれぞれ上偏光板１と下偏光板２の外側に配置されている。本発明に適用される上偏光板１と下偏光板２の分極軸は相互に交錯し、本実施例中の上偏光板１の分極軸１１（点線矢印で表示）及び下偏光板２の分極軸２２（点線矢印で表示）は相互に垂直を成す方向に配置されている。   FIG. 3 is a side view of a preferred embodiment of the multi-domain vertical alignment liquid crystal display device of the present invention. FIG. 4 is a plan view of this embodiment. As illustrated, the multi-domain vertical alignment liquid crystal display device of this embodiment includes an upper polarizing plate 1, a lower polarizing plate 2, an upper substrate 10 (first substrate), and a lower substrate 20 (second substrate). A liquid crystal layer (liquid crystal molecules 7) is sandwiched between the upper substrate 10 and the lower substrate 20 in this embodiment. The liquid crystal layer (liquid crystal molecules 7) is sealed between the upper substrate 10 and the lower substrate 20. The upper polarizing plate 1 and the lower polarizing plate 2 of the present invention are disposed on the surface of the upper substrate 10 and the lower substrate 20 facing the liquid crystal layer (liquid crystal molecule 7) as necessary, or opposite to the liquid crystal layer (liquid crystal molecule 7). Is disposed on the surface of the substrate. In this embodiment, the upper polarizing plate 1 and the lower polarizing plate 2 are disposed outside the upper polarizing plate 1 and the lower polarizing plate 2, respectively. The polarization axes of the upper polarizing plate 1 and the lower polarizing plate 2 applied to the present invention intersect each other, and the polarization axis 11 (indicated by a dotted arrow) of the upper polarizing plate 1 and the polarization of the lower polarizing plate 2 in this embodiment. The shafts 22 (indicated by dotted arrows) are arranged in directions perpendicular to each other.

本実施例中の上基板１０には突起物３が設けられ、幾何空間変化を利用して、液晶分子長軸を突起物３に向けて傾斜させる案内に用いられ、通常平面視によると、液晶分子長軸７１は突起物３と垂直である。本実施例中の突起物３は鋸歯状に設置され、且つ鋸歯状の突起物３の下基板２０表面における投影の延伸方向は、上偏光板１の分極軸１１或いは下偏光板２の分極軸２２と平行或いは垂直となるよう配置される。突起物３がこのように配置される時、液晶分子長軸７１は突起物３と垂直であるため、液晶分子長軸７１と上偏光板１の分極軸１１或いは下偏光板２の分極軸２２は平行或いは垂直であり、即ち液晶分子長軸７１は上偏光板１の透光軸３１或いは下偏光板２の透光軸３２と約４５°夾角を形成する。これにより液晶層（液晶分子７）と突起物３間に形成される漏光は、本実施例の配置により、透光軸３１、３２と液晶分子長軸７１が不平行であるため、液晶分子による屈折により引き起こされる漏光が大幅に低減される。   In the present embodiment, the upper substrate 10 is provided with a protrusion 3, which is used for guiding the major axis of the liquid crystal molecules toward the protrusion 3 by utilizing a change in geometric space. The molecular long axis 71 is perpendicular to the protrusion 3. The projections 3 in this embodiment are installed in a sawtooth shape, and the projection extension direction on the lower substrate 20 surface of the sawtooth projections 3 is the polarization axis 11 of the upper polarizing plate 1 or the polarization axis of the lower polarizing plate 2. It is arranged so as to be parallel or perpendicular to 22. When the protrusions 3 are arranged in this way, the liquid crystal molecule long axis 71 is perpendicular to the protrusions 3, so the liquid crystal molecule long axis 71 and the polarization axis 11 of the upper polarizing plate 1 or the polarization axis 22 of the lower polarizing plate 2. Are parallel or perpendicular, that is, the liquid crystal molecule major axis 71 forms an approximately 45 ° depression with the light transmission axis 31 of the upper polarizing plate 1 or the light transmission axis 32 of the lower polarizing plate 2. As a result, the light leakage formed between the liquid crystal layer (liquid crystal molecules 7) and the protrusions 3 is caused by the liquid crystal molecules because the translucent axes 31 and 32 and the liquid crystal molecule major axis 71 are not parallel due to the arrangement of this embodiment. Light leakage caused by refraction is greatly reduced.

本実施例中の下基板２０（第２基板）には複数のアレイ式画素電極４が配設されている。この画素電極４は本実施例ではＩＴＯで形成されている。下基板２０（第２基板）近隣の画素電極４間には間隔が設けられ、且つ各間隔の画素電極４の辺縁に、複数のスリット５が設けられている。本実施例中、スリット５の延伸方向は偏光板の分極軸１１、２２と４５°夾角を形成し、且つ複数のスリット５の個別長さは同じでない。   A plurality of array type pixel electrodes 4 are arranged on the lower substrate 20 (second substrate) in the present embodiment. The pixel electrode 4 is made of ITO in this embodiment. A space is provided between the pixel electrodes 4 in the vicinity of the lower substrate 20 (second substrate), and a plurality of slits 5 are provided on the edge of the pixel electrode 4 at each space. In this embodiment, the extending direction of the slit 5 forms a 45 ° depression angle with the polarization axes 11 and 22 of the polarizing plate, and the individual lengths of the plurality of slits 5 are not the same.

スリット５は画素電極４の辺縁に位置し、その延伸方向は突起物３の下基板２０（第２基板）における投影と約４５°角を以て交叉し、並びにスリット５の長さ（Ｌ）は画素電極４の同一辺縁両端より中間に向けて漸増或いは漸減する。電圧がこの液晶ディスプレイ装置に提供される時、その電場はスリット長さの影響を受け、これにより同一グレーレベルのネガ型液晶分子７が異なる傾斜角を発生し、即ち液晶分子７の同一の画素内の同一の突起物３隣接区域における傾斜角度がいずれも異なるものとなる。ただしスリット５の分布が規則性分布を成すため、液晶分子７の傾斜角度も規則性分布を成す。周知の液晶ディスプレイ装置の透光度は液晶分子７の傾斜角の形成する全体平均屈折率に関係し、本発明のスリットを設置することにより、突起物３の隣接区域の全体平均液晶分子７傾斜角がほぼ同じとなり、ゆえに液晶分子７の傾斜角が形成する全体平均屈折率がほぼ同じとなり、ゆえに突起物３の隣接区域の透光度がほぼ同じとなり、ゆえに液晶ディスプレイ装置の異なる画素電極４輝度分布が改善され、液晶ディスプレイ装置の輝度の均一化の効果が達成される。これにより、人の視線と同一グレーレベルの液晶分子長軸７１の夾角が夾角の平均値を得られ、ゆえに異なる角度でこの液晶ディスプレイ装置を観る時、人の視線と液晶分子長軸７１の夾角がいずれも平均値とされ、ゆえに視線と液晶分子長軸の夾角が視角により改変しない。これにより、この液晶ディスプレイ装置はどの角度から観ても同様の輝度値を得られる。   The slit 5 is located at the edge of the pixel electrode 4, and the extending direction intersects the projection on the lower substrate 20 (second substrate) of the protrusion 3 with an angle of about 45 °, and the length (L) of the slit 5 is The pixel electrode 4 gradually increases or decreases gradually from both ends of the same edge toward the middle. When a voltage is applied to the liquid crystal display device, the electric field is affected by the slit length, which causes the negative liquid crystal molecules 7 of the same gray level to generate different tilt angles, that is, the same pixel of the liquid crystal molecules 7. The inclination angles in the adjacent areas of the same protrusion 3 are different from each other. However, since the distribution of the slits 5 is a regular distribution, the tilt angle of the liquid crystal molecules 7 is also a regular distribution. The transmissivity of the known liquid crystal display device is related to the overall average refractive index formed by the tilt angle of the liquid crystal molecules 7, and the overall average liquid crystal molecule 7 tilts in the adjacent area of the protrusion 3 by installing the slit of the present invention. The angles are substantially the same, and therefore the overall average refractive index formed by the tilt angles of the liquid crystal molecules 7 is substantially the same, and therefore the transmissivity of the adjacent areas of the protrusions 3 is substantially the same, and therefore the different pixel electrodes 4 of the liquid crystal display device. The luminance distribution is improved, and the effect of uniforming the luminance of the liquid crystal display device is achieved. As a result, the depression angle of the liquid crystal molecule long axis 71 at the same gray level as the person's line of sight can be obtained as an average value of the depression angle. Therefore, when viewing this liquid crystal display device at a different angle, the depression angle of the person's line of sight and the liquid crystal molecule long axis 71 Are average values. Therefore, the depression angle between the line of sight and the major axis of the liquid crystal molecule is not altered by the viewing angle. Thereby, this liquid crystal display device can obtain the same luminance value from any angle.

図５、６も参照されたい。図５は本実施例の未電圧印加時の平面図、及び図６は本実施例の電圧印加時の平面図である。上述したように、未電圧印加時には、突起物３の角度配置により透光軸３１、３２と液晶分子長軸７１の方向は不平行となり、ゆえに液晶分子７の引き起こす漏光を減少でき、良好な暗状態を達成できる。電圧印加時には、液晶分子長軸７１が透光軸３１と平行となり、光線を通過させ、並びに液晶分子７の傾斜角が画素電極４上のスリット５の影響を受けるため、上述したように異なる傾斜角が形成する全体平均屈折率が発生し、均一な輝度が得られる。   See also FIGS. FIG. 5 is a plan view of the present embodiment when no voltage is applied, and FIG. 6 is a plan view of the present embodiment when a voltage is applied. As described above, when no voltage is applied, the direction of the light transmission axes 31 and 32 and the liquid crystal molecule major axis 71 becomes non-parallel due to the angular arrangement of the protrusions 3. The state can be achieved. When a voltage is applied, the liquid crystal molecule major axis 71 is parallel to the translucent axis 31 and transmits light, and the tilt angle of the liquid crystal molecule 7 is affected by the slit 5 on the pixel electrode 4, so that the different tilts as described above. The overall average refractive index formed by the corners is generated, and uniform brightness can be obtained.

すなわち、偏光板の分極軸１１、２２の方向と突起物３の角度配置により、液晶分子７の漏光の引き起こす輝度不均一が改善される。スリット５の配置分布により突起物３の両側の、均一の液晶分子傾斜角により形成される全体平均屈折率の違いが改善される。ゆえに本発明のマルチドメイン垂直配向液晶ディスプレイ装置の漏光情況及び輝度分布が改善され、画像表示のコントラストが高められ、画像品質が改善される。   That is, the non-uniform brightness caused by light leakage of the liquid crystal molecules 7 is improved by the direction of the polarization axes 11 and 22 of the polarizing plate and the angular arrangement of the protrusions 3. The difference in the overall average refractive index formed by the uniform liquid crystal molecule tilt angle on both sides of the protrusion 3 is improved by the arrangement distribution of the slits 5. Therefore, the light leakage situation and the luminance distribution of the multi-domain vertical alignment liquid crystal display device of the present invention are improved, the contrast of the image display is increased, and the image quality is improved.

図７は本発明のマルチドメイン垂直配向液晶ディスプレイ装置の別の実施例の平面図である。本実施例のマルチドメイン垂直配向液晶ディスプレイ装置は、スリット５の、下基板２０（第２基板）の複数のアレイ式画素電極４上における分布が前述の実施例と異なるほかは、部品及び配置はいずれも前述の実施例と同じである。本実施例のスリット５は画素電極４の辺縁に位置し、その延伸方向は突起物３の下基板２０（第２基板）における投影と相互に約４５°角を以て交叉し、並びにスリット５間の間距は画素電極４の同一辺縁の両端より中間に向けて漸減する。   FIG. 7 is a plan view of another embodiment of the multi-domain vertical alignment liquid crystal display device of the present invention. The multi-domain vertical alignment liquid crystal display device according to the present embodiment has the same components and arrangement except that the distribution of the slits 5 on the plurality of array-type pixel electrodes 4 on the lower substrate 20 (second substrate) is different from that of the previous embodiment. Both are the same as in the previous embodiment. The slit 5 of this embodiment is located at the edge of the pixel electrode 4, and its extending direction intersects with the projection on the lower substrate 20 (second substrate) of the protrusion 3 at an angle of about 45 °, and between the slits 5. The interval is gradually decreased from both ends of the same edge of the pixel electrode 4 toward the middle.

本実施例の効果と前述の実施例は同じであり、偏光板分極軸１１、２２と突起物３の角度配置により、液晶分子７の引き起こす輝度不均一を改善する。スリット５の配置分布により、突起物３両側の均一な液晶分子傾斜角度により形成される全体平均屈折率の違いが改善される。本発明のマルチドメイン垂直配向液晶ディスプレイ装置の漏光情況及び輝度分布は改善され、画像表示のコントラストが高められ、画像品質が改善される。   The effect of this embodiment is the same as that of the previous embodiment, and the uneven brightness caused by the liquid crystal molecules 7 is improved by the angular arrangement of the polarization axes 11 and 22 and the protrusions 3. Due to the arrangement distribution of the slits 5, the difference in the overall average refractive index formed by the uniform liquid crystal molecule tilt angles on both sides of the protrusion 3 is improved. The light leakage situation and the luminance distribution of the multi-domain vertical alignment liquid crystal display device of the present invention are improved, the image display contrast is enhanced, and the image quality is improved.

図８は本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第３実施例の平面図である。本実施例のマルチドメイン垂直配向液晶ディスプレイ装置は、スリット５の、下基板２０（第２基板）の複数のアレイ式画素電極４上における分布が前述の実施例と異なるほかは、部品及び配置はいずれも前述の実施例と同じである。本実施例のスリット５は画素電極４の辺縁に位置し、その延伸方向は突起物３の下基板２０（第２基板）における投影と相互に約４５°角を以て交叉し、並びにスリット５間距は画素電極４の同一辺縁の両端より中間に向けて漸増する。   FIG. 8 is a plan view of a third embodiment of the multi-domain vertical alignment liquid crystal display device of the present invention. The multi-domain vertical alignment liquid crystal display device according to the present embodiment has the same components and arrangement except that the distribution of the slits 5 on the plurality of array-type pixel electrodes 4 on the lower substrate 20 (second substrate) is different from that of the previous embodiment. Both are the same as in the previous embodiment. The slit 5 of this embodiment is located at the edge of the pixel electrode 4, and its extending direction intersects with the projection on the lower substrate 20 (second substrate) of the protrusion 3 at an angle of about 45 ° and the distance between the slits 5. Gradually increases from both ends of the same edge of the pixel electrode 4 toward the middle.

本実施例の効果と前述の実施例は同じであり、偏光板分極軸１１、２２と突起物３の角度配置により、液晶分子７の引き起こす輝度不均一を改善する。スリット５の配置分布により、突起物３両側の均一な液晶分子傾斜角度により形成される全体平均屈折率の違いが改善される。本発明のマルチドメイン垂直配向液晶ディスプレイ装置の漏光情況及び輝度分布は改善され、画像表示のコントラストが高められ、画像品質が改善される。   The effect of this embodiment is the same as that of the previous embodiment, and the uneven brightness caused by the liquid crystal molecules 7 is improved by the angular arrangement of the polarization axes 11 and 22 and the protrusions 3. Due to the arrangement distribution of the slits 5, the difference in the overall average refractive index formed by the uniform liquid crystal molecule tilt angles on both sides of the protrusion 3 is improved. The light leakage situation and the luminance distribution of the multi-domain vertical alignment liquid crystal display device of the present invention are improved, the image display contrast is enhanced, and the image quality is improved.

周知のマルチドメイン垂直配向液晶ディスプレイ装置の側面図である。1 is a side view of a known multi-domain vertical alignment liquid crystal display device. FIG. 周知のマルチドメイン垂直配向液晶ディスプレイ装置の平面図である。1 is a plan view of a known multi-domain vertical alignment liquid crystal display device. FIG. 本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第１実施例の側面図である。1 is a side view of a first embodiment of a multi-domain vertical alignment liquid crystal display device of the present invention. 本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第１実施例の平面図である。1 is a plan view of a first embodiment of a multi-domain vertical alignment liquid crystal display device of the present invention. 本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第１実施例の未電圧印加時の平面図である。FIG. 3 is a plan view of the first embodiment of the multi-domain vertical alignment liquid crystal display device of the present invention when no voltage is applied. 本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第１実施例の電圧印加時の平面図である。1 is a plan view when a voltage is applied in a first embodiment of a multi-domain vertical alignment liquid crystal display device of the present invention. 本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第２実施例の平面図である。FIG. 6 is a plan view of a second embodiment of the multi-domain vertical alignment liquid crystal display device of the present invention. 本発明のマルチドメイン垂直配向液晶ディスプレイ装置の第３実施例の平面図である。FIG. 6 is a plan view of a third embodiment of the multi-domain vertical alignment liquid crystal display device of the present invention. 周知の液晶ディスプレイ装置の立体図である。It is a three-dimensional view of a known liquid crystal display device.

符号の説明Explanation of symbols

１ 上偏光板 ２ 下偏光板 ３ 突起物
４ 画素電極 ５ スリット ７ 液晶分子
１０ 上基板 １１ 分極軸 ２０ 下基板
２２ 分極軸 ３１ 透光軸 ３２ 透光軸
７１ 液晶分子長軸
DESCRIPTION OF SYMBOLS 1 Upper polarizing plate 2 Lower polarizing plate 3 Protrusion 4 Pixel electrode 5 Slit 7 Liquid crystal molecule 10 Upper substrate 11 Polarization axis 20 Lower substrate 22 Polarization axis 31 Light transmission axis 32 Light transmission axis 71 Liquid crystal molecule long axis

Claims (10)

マルチドメイン垂直配向液晶ディスプレイ装置において、
第１偏光板と、
第２偏光板であって、該第２偏光板の分極軸が該第１偏光板の分極軸と交叉する、上記第２偏光板と、
複数の突起物を具えた第１基板であって、該第１偏光板と該第２偏光板の間に位置し、該突起物が該第１基板の一つの表面に位置し、且つ該突起物と該第１偏光板或いは第２偏光板の分極軸との夾角が０°から１０°或いは８０°から９０°の間である、上記第１基板と、
複数の画素電極を具えた第２基板であって、該第１偏光板と該第２偏光板の間に位置し、且つ該画素電極が該第２基板の一つの表面に位置する、上記第２基板と、
該第１基板と該第２基板の間に位置する液晶層と、
を具え、該突起物が該第１基板と該第２基板の間に位置することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。 In a multi-domain vertical alignment liquid crystal display device,
A first polarizing plate;
A second polarizing plate, wherein the polarization axis of the second polarizing plate intersects with the polarization axis of the first polarizing plate;
A first substrate having a plurality of protrusions, the first substrate being positioned between the first polarizing plate and the second polarizing plate, wherein the protrusions are positioned on one surface of the first substrate; and The first substrate having a depression angle with the polarization axis of the first polarizing plate or the second polarizing plate of 0 ° to 10 ° or 80 ° to 90 °;
A second substrate comprising a plurality of pixel electrodes, wherein the second substrate is located between the first polarizing plate and the second polarizing plate, and the pixel electrode is located on one surface of the second substrate. When,
A liquid crystal layer positioned between the first substrate and the second substrate;
A multi-domain vertical alignment liquid crystal display device, wherein the protrusion is located between the first substrate and the second substrate. 請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、画素電極表面に複数のスリットが設けられ、該スリットが画素電極の辺縁に位置し、該スリットの延伸方向が突起物の第２基板における投影と相互に交錯することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   2. The multi-domain vertical alignment liquid crystal display device according to claim 1, wherein a plurality of slits are provided on the surface of the pixel electrode, the slits are positioned on the edge of the pixel electrode, and the extending direction of the slit is on the projection second substrate. A multi-domain vertical alignment liquid crystal display device characterized in that it intersects with projection. 請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、スリットの延伸方向と突起物の投影の交叉の角度範囲が３０°から５０°の間であることを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   3. The multi-domain vertical alignment liquid crystal display device according to claim 2, wherein an angle range of the crossing direction of the slit extension direction and the projection projection is between 30 [deg.] And 50 [deg.]. apparatus. 請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、少なくとも二つのスリットの長さが異なるか或いは少なくとも二つのスリット間距が異なることを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   3. The multi-domain vertical alignment liquid crystal display device according to claim 2, wherein the lengths of at least two slits are different or the distance between at least two slits is different. 請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、スリットの長さが画素電極の同一辺縁の両端より中間に向けて漸減或いは漸増することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   3. The multi-domain vertical alignment liquid crystal display device according to claim 2, wherein the length of the slit gradually decreases or gradually increases from both ends of the same edge of the pixel electrode toward the middle. 請求項２記載のマルチドメイン垂直配向液晶ディスプレイ装置において、スリット間の幅が画素電極の同一辺縁の両端より中間に向けて漸減或いは漸増することを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   3. The multi-domain vertical alignment liquid crystal display device according to claim 2, wherein the width between the slits gradually decreases or gradually increases from both ends of the same edge of the pixel electrode toward the middle. 請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、第１基板と第２基板がガラス基板とされたことを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   2. The multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the first substrate and the second substrate are glass substrates. 請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、突起物が鋸歯状とされたことを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   2. The multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the protrusions have a sawtooth shape. 請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、第２偏光板の分極軸と第１偏光板の分極軸が垂直であることを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。   2. The multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the polarization axis of the second polarizing plate and the polarization axis of the first polarizing plate are perpendicular to each other. 請求項１記載のマルチドメイン垂直配向液晶ディスプレイ装置において、液晶分子がネガ型誘電異方性液晶とされたことを特徴とする、マルチドメイン垂直配向液晶ディスプレイ装置。
2. The multi-domain vertical alignment liquid crystal display device according to claim 1, wherein the liquid crystal molecules are negative dielectric anisotropic liquid crystals.
JP2005122520A 2004-10-26 2005-04-20 Multi-domain vertical alignment liquid crystal display Pending JP2006126773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW093132414A TWI282002B (en) 2004-10-26 2004-10-26 A multi-domain vertical alignment liquid crystal display device

Publications (1)

Publication Number Publication Date
JP2006126773A true JP2006126773A (en) 2006-05-18

Family

ID=36205841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005122520A Pending JP2006126773A (en) 2004-10-26 2005-04-20 Multi-domain vertical alignment liquid crystal display

Country Status (4)

Country Link
US (1) US20060087607A1 (en)
JP (1) JP2006126773A (en)
KR (1) KR100750015B1 (en)
TW (1) TWI282002B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200941072A (en) * 2008-03-27 2009-10-01 Wintek Corp Liquid crystal display panel
EP3282313A4 (en) * 2015-04-28 2018-05-02 Huawei Technologies Co. Ltd. Multi-domain vertical alignment liquid crystal screen and manufacturing method thereof
CN112198723A (en) * 2020-10-09 2021-01-08 深圳市华星光电半导体显示技术有限公司 Liquid crystal display screen and liquid crystal display device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5579140A (en) * 1993-04-22 1996-11-26 Sharp Kabushiki Kaisha Multiple domain liquid crystal display element and a manufacturing method of the same
KR100309918B1 (en) * 1998-05-16 2001-12-17 윤종용 Liquid crystal display having wide viewing angle and method for manufacturing the same
KR100607741B1 (en) * 2000-05-24 2006-08-01 엘지.필립스 엘시디 주식회사 Color liquid crystal display
US6614497B2 (en) * 2001-05-29 2003-09-02 Chi Mei Optoelectronics Corp. Liquid crystal display device having particular pixel electrodes
JP4041336B2 (en) * 2001-06-29 2008-01-30 シャープ株式会社 Substrate for liquid crystal display device, liquid crystal display device including the same, and manufacturing method thereof
KR20030012347A (en) * 2001-07-31 2003-02-12 삼성전자주식회사 a vertically aligned mode liquid crystal display
TW588171B (en) * 2001-10-12 2004-05-21 Fujitsu Display Tech Liquid crystal display device
JP3912320B2 (en) * 2003-05-02 2007-05-09 セイコーエプソン株式会社 Liquid crystal display device and electronic device

Also Published As

Publication number Publication date
KR20060049339A (en) 2006-05-18
TW200613810A (en) 2006-05-01
KR100750015B1 (en) 2007-08-16
TWI282002B (en) 2007-06-01
US20060087607A1 (en) 2006-04-27

Similar Documents

Publication Publication Date Title
KR101216768B1 (en) Stereoscopic image display device
KR102236479B1 (en) Liquid crystal display apparatus
TWI584032B (en) Liquid crystal display device
KR102183353B1 (en) Liquid crystal display device
US7522242B2 (en) Liquid crystal display device and method of controlling viewing angle thereof
WO2014196125A1 (en) Image display device and liquid crystal lens
US7982820B2 (en) Liquid crystal display with narrow angular range of incident light and method of making the display
US20090153786A1 (en) Multi-domain liquid crystal display device and method for fabricating the same
JP6976353B2 (en) Liquid crystal display panel and liquid crystal display device
US7394512B2 (en) Liquid crystal display device
US10481465B2 (en) Illumination device and display device
JP2007279224A (en) Liquid crystal display apparatus
JP2007133280A (en) Liquid crystal display apparatus
JP2009288373A (en) Liquid crystal device and electronic apparatus
JP2006091216A (en) Transflective liquid crystal display device and manufacturing method thereof
US7382427B2 (en) Liquid crystal display device
JP4511409B2 (en) Multi-domain vertical alignment liquid crystal display device
JP2006126773A (en) Multi-domain vertical alignment liquid crystal display
JP2007240903A (en) Optical control element and display device
JP2009216793A (en) Liquid crystal display device
KR100601173B1 (en) a liquid crystal display
JP6959742B2 (en) Liquid crystal display and liquid crystal module
JP2007199577A (en) Liquid crystal display apparatus
JP2008083395A (en) Liquid crystal display device
US20130027649A1 (en) Liquid crystal display device

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080520

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20081021